Abstract:
:Contemporary North American drainage basins are composites of formerly isolated drainages, suggesting that fragmentation and fusion of palaeodrainage systems may have been an important factor generating current patterns of genetic and species diversity in stream-associated organisms. Here, we combine traditional molecular-phylogenetic, multiple-regression, nested clade, and molecular-demographic analyses to investigate the relationship between phylogeographic variation and the hydrogeological history of eastern North American drainage basins in semiaquatic plethodontid salamanders of the Eurycea bislineata species complex. Four hundred forty-two sequences representing 1108 aligned bases from the mitochondrial genome are reported for the five formally recognized species of the E. bislineata complex and three outgroup taxa. Within the in-group, 270 haplotypes are recovered from 144 sampling locations. Geographic patterns of mtDNA-haplotype coalescence identify 13 putatively independent population-level lineages, suggesting that the current taxonomy of the group underestimates species-level diversity. Spatial and temporal patterns of phylogeographic divergence are strongly associated with historical rather than modern drainage connections, indicating that shifts in major drainage patterns played a pivotal role in the allopatric fragmentation of populations and build-up of lineage diversity in these stream-associated salamanders. More generally, our molecular genetic results corroborate geological and faunistic evidence suggesting that palaeodrainage connections altered by glacial advances and headwater erosion occurring between the mid-Miocene and Pleistocene epochs explain regional patterns of biodiversity in eastern North American streams.
journal_name
Mol Ecoljournal_title
Molecular ecologyauthors
Kozak KH,Blaine RA,Larson Adoi
10.1111/j.1365-294X.2005.02757.xsubject
Has Abstractpub_date
2006-01-01 00:00:00pages
191-207issue
1eissn
0962-1083issn
1365-294Xpii
MEC2757journal_volume
15pub_type
杂志文章abstract::The expansion–contraction (EC) model predicts demographic and range contraction of temperate species during Pleistocene glaciations as a consequence of climate-related habitat changes, and provides a paradigm for explaining the high intraspecific diversity found in refugia in terms of long-term demographic stability. ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12668
更新日期:2014-03-01 00:00:00
abstract::The ecological and genetic factors determining the extent of introgression between species in secondary contact zones remain poorly understood. Here, we investigate the relative importance of isolating barriers and the demographic expansion of invasive Mytilus galloprovincialis on the magnitude and the direction of in...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13340
更新日期:2015-09-01 00:00:00
abstract::Sparse, incomplete and inappropriate historical records of invasive species often hamper invasive species management interventions. Population genetic analyses of invaders might provide a suitable context for the identification of their source populations and possible introduction routes. Here, we describe the populat...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13411
更新日期:2015-11-01 00:00:00
abstract::Variance in reproductive success is a major determinant of the degree of genetic drift in a population. While many plants and animals exhibit high variance in their number of progeny, far less is known about these distributions for microorganisms. Here, we used a strain barcoding approach to quantify variability in of...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15200
更新日期:2019-09-01 00:00:00
abstract::Weedy rice (Oryza spp.), a weedy relative of cultivated rice (O. sativa), infests and persists in cultivated rice fields worldwide. Many weedy rice populations have evolved similar adaptive traits, considered part of the 'agricultural weed syndrome', making this an ideal model to study the genetic basis of parallel ev...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14120
更新日期:2017-06-01 00:00:00
abstract::High-throughput sequencing approaches have enabled characterizations of the community composition of numerous gut microbial communities, which in turn has enhanced interest in their diversity and functional relationships in different groups of vertebrates. Although fishes represent the greatest taxonomic and ecologica...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12699
更新日期:2014-04-01 00:00:00
abstract::Recent theory has examined the way in which vaccination strategies are expected to influence the evolution of parasite virulence. Most of this work has assumed that vaccination is imposed on a homogeneous host population. However, host populations are typically composed of different types of individuals, with each typ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03418.x
更新日期:2008-01-01 00:00:00
abstract::The carabid beetle Pterostichus melanarius is a major natural enemy of pests, such as aphids and slugs in agricultural systems. Earthworms are a dominant non-pest component of the diet of P. melanarius which help sustain the beetles during periods when the pest population is low or absent. In this study we wanted to t...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2010.04602.x
更新日期:2010-04-01 00:00:00
abstract::Detailed evaluations of genomic variation between sister species often reveal distinct chromosomal regions of high relative differentiation (i.e., "islands of differentiation" in FST ), but there is much debate regarding the causes of this pattern. We briefly review the prominent models of genomic islands of different...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14858
更新日期:2018-12-01 00:00:00
abstract::Corals play a key role in ocean ecosystems and carbonate balance, but their molecular response to ocean acidification remains unclear. The only previous whole-transcriptome study (Moya et al. Molecular Ecology, 2012; 21, 2440) documented extensive disruption of gene expression, particularly of genes encoding skeletal ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13021
更新日期:2015-01-01 00:00:00
abstract::Elucidating the complex evolutionary armory that mosquitoes deploy against insecticides is crucial to maintain the effectiveness of insecticide-based interventions. Here, we deciphered the role of a 6.5-kb structural variation (SV) in driving cytochrome P450-mediated pyrethroid resistance in the malaria vector, Anophe...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15645
更新日期:2020-11-01 00:00:00
abstract::Herbicides act as human-mediated novel selective agents and community disruptors, yet their full effects on eco-evolutionary dynamics in natural communities have only begun to be appreciated. Here, we synthesize how herbicide exposures can result in dramatic phenotypic and compositional shifts within communities at th...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.15510
更新日期:2020-06-16 00:00:00
abstract::In certain cases, a species may have access to important genetic variation present in a related species via adaptive introgression. These novel alleles may interact with their new genetic background, resulting in unexpected phenotypes. In this study, we describe a selective sweep on standing variation on the X chromos...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13382
更新日期:2015-10-01 00:00:00
abstract::Following the announcement of the first case of rabbit haemorrhagic disease (RHD) in a pet rabbit, housed indoors in Canada for more than 1 year, I submitted an evidence-based explanation to ProMed explaining how RHD might have caused the death of 'one' of the three pet rabbits. I suggested with supporting evidence, t...
journal_title:Molecular ecology
pub_type: 评论,信件
doi:10.1111/j.1365-294X.2012.05462.x
更新日期:2012-03-01 00:00:00
abstract::Isolation due to both geological barriers and range contractions during the Pleistocene glacial maxima has been an important cause of diversification of arid-adapted species in the North American deserts. Tree lizards, Urosaurus ornatus, are distributed across much of the southwestern arid regions and can tolerate a w...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03515.x
更新日期:2007-10-01 00:00:00
abstract::A considerable fraction of the world's biodiversity is of recent evolutionary origin and has evolved as a by-product of, and is maintained by, divergent adaptation in heterogeneous environments. Conservationists have paid attention to genetic homogenization caused by human-induced translocations (e.g. biological invas...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2007.03529.x
更新日期:2008-01-01 00:00:00
abstract::The Monotropoideae (Ericaceae) are non-photosynthetic angiosperms that obtain fixed carbon from basidiomycete ectomycorrhizal fungi. In previous work, we showed that each plant species is associated with a single genus or a set of closely related genera of ectomycorrhizal fungi. Here we show that the level of specific...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.0962-1083.2001.01443.x
更新日期:2002-03-01 00:00:00
abstract::Genetic variation supplies the raw material for adaptation, evolution and survival of populations and has therefore been a key focus of conservation biology ever since its foundation (Soulé 1985). In previous decades, the neutral component of genetic diversity (generated by mutation and shaped by drift) has been the s...
journal_title:Molecular ecology
pub_type: 评论,杂志文章
doi:10.1111/j.1365-294x.2011.05024.x
更新日期:2011-04-01 00:00:00
abstract::An isolated population of dark-eyed juncos, Junco hyemalis, became established on the campus of the University of California at San Diego (UCSD), probably in the early 1980s. It now numbers about 70 breeding pairs. Populations across the entire natural range of the subspecies J. h. thurberi are weakly differentiated f...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.2004.02104.x
更新日期:2004-03-01 00:00:00
abstract::As natural selection must act on underlying genetic variation, discovering the number and location of loci under the influence of selection is imperative towards understanding adaptive divergence in evolving populations. Studies employing genome scans have hypothesized that the action of divergent selection should red...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2004.02396.x
更新日期:2005-02-01 00:00:00
abstract::Formation of partially reproductively isolated ecotypes in the rough periwinkle, Littorina saxatilis, may be a case of incipient nonallopatric ecological speciation. To better understand the dynamics of ecotype formation, its timescale, driving forces and evolutionary consequences, we developed a spatially explicit, i...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2009.04320.x
更新日期:2009-10-01 00:00:00
abstract::Functionally constrained genes are ideal insecticide targets because disruption is often fatal, and resistance mutations are typically costly. Synaptic acetylcholinesterase (AChE) is an essential neurotransmission enzyme targeted by insecticides used increasingly in malaria control. In Anopheles and Culex mosquitoes, ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.13197
更新日期:2015-06-01 00:00:00
abstract::A half century ago the State of Hawaii began a remarkable, if unintentional, experiment on the population genetics of introduced species, by releasing 2431 Bluestriped Snappers (Lutjanus kasmira) from the Marquesas Islands in 1958 and 728 conspecifics from the Society Islands in 1961. By 1992 L. kasmira had spread acr...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2010.04535.x
更新日期:2010-03-01 00:00:00
abstract::Insect guts are often colonized by multispecies microbial communities that play integral roles in nutrition, digestion and defence. Community composition can differ across host species with increasing dietary and genetic divergence, yet gut microbiota can also vary between conspecific hosts and across an individual's ...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.12607
更新日期:2014-03-01 00:00:00
abstract::One of the primary challenges of evolutionary research is to identify ecological factors that favour reproductive isolation. Therefore, studying partially isolated taxa has the potential to provide novel insight into the mechanisms of evolutionary divergence. Our study utilizes an adaptive colour polymorphism in the a...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14527
更新日期:2018-03-01 00:00:00
abstract::We developed genetic markers for three microsatellite loci in the tropical tree Symphonia globulifera and used them to examine the demographic genetic consequences of forest fragmentation. High levels of genetic variation were revealed in samples of adults, saplings, and seedlings. The more-variable loci exhibited les...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1046/j.1365-294x.1998.00396.x
更新日期:1998-08-01 00:00:00
abstract::House mice are extra-ordinary animals -extra-ordinary in the literal sense of that word. They are pests - but also a valued laboratory animal. They are generalized rodents - and successful in habitats from tundra to tropics and from sea-level to high altitudes. They have differentiated into a perplexity of taxa, yet d...
journal_title:Molecular ecology
pub_type: 评论,杂志文章
doi:10.1111/j.1365-294X.2009.04345.x
更新日期:2009-11-01 00:00:00
abstract::Most relatives of the self-fertilizing hermaphroditic nematode model organism Caenorhabditis elegans reproduce via obligate outbreeding between males and females, which also represents the ancestral mode of reproduction within the genus. However, little is known about the scope of genetic diversity and differentiation...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/j.1365-294X.2010.04862.x
更新日期:2010-11-01 00:00:00
abstract::Landscape features are known to alter the spatial genetic variation of aboveground organisms. Here, we tested the hypothesis that the genetic structure of belowground organisms also responds to landscape structure. Microsatellite markers were used to carry out a landscape genetic study of two endogeic earthworm specie...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14102
更新日期:2017-06-01 00:00:00
abstract::The variation and taxonomic diversity among mammalian gut microbiomes raises several questions about the factors that contribute to the rates and patterns of change in these microbial communities. By comparing the microbiome compositions of 112 species representing 14 mammalian orders, we assessed how host and ecologi...
journal_title:Molecular ecology
pub_type: 杂志文章
doi:10.1111/mec.14473
更新日期:2018-04-01 00:00:00